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Subject[PATCH 2/3] power: reset: sc27xx: Change to use cpu_down()
Date
To allow the SC27XX driver can be built as a module, and the
freeze_secondary_cpus() symbol is not exported, thus we can change
to use the exported cpu_down() API to shut down other cpus to avoid
racing, which is same as the freeze_secondary_cpus().

Signed-off-by: Baolin Wang <baolin.wang7@gmail.com>
---
drivers/power/reset/sc27xx-poweroff.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/power/reset/sc27xx-poweroff.c b/drivers/power/reset/sc27xx-poweroff.c
index 2bedd4c..91b5ece 100644
--- a/drivers/power/reset/sc27xx-poweroff.c
+++ b/drivers/power/reset/sc27xx-poweroff.c
@@ -29,10 +29,13 @@
*/
static void sc27xx_poweroff_shutdown(void)
{
-#ifdef CONFIG_PM_SLEEP_SMP
- int cpu = smp_processor_id();
+#ifdef CONFIG_HOTPLUG_CPU
+ int cpu;

- freeze_secondary_cpus(cpu);
+ for_each_online_cpu(cpu) {
+ if (cpu != smp_processor_id())
+ cpu_down(cpu);
+ }
#endif
}

--
1.9.1
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